Keep your favorite Extensions synced with all your computers.
Toggle Firefox's built-in private browsing mode with a toolbar or status bar button. You can also toggle Firefox to auto-start in private browsing mode.
Press ctrl+shift+K (or) double-click to see its meaning. This extension is ideal for those who doesn't like to switch their window to see the meaning of a word. ...
After the Deadline is an intelligent grammar, style, and spell checker. It works with most web sites.
Note from Mozilla: This add-on has been discontinued. Try DragIt instead.
Allows you to open links in new tabs, and do more with drag and drop gestures easier.
Note from Mozilla: This add-on has been discontinued. Try WebMail Notifier instead.
The original notifier for Gmail.
CommentBlocker is an addon which essentially blocks, or hides, all unwanted comments on websites you visit. It can be used as either a blacklist or a whitelist for websites, letting you decide what to filter out and what not to.
Cookies can be removed on-demand and automatically based on pre-defined simple rules. Used to clean up cookies from certain sites or clean up all cookies except from certain sites. This can be done both on demand by a simple click or automatically.
Block Facebook content from appearing on other websites.
Note from Mozilla: This add-on has been discontinued. Try Add-on Update Checker instead.
Notifies you when updates are available for your extensions and themes.
Extends the Location Bar with set of commands to (Shorten URL's,Copy URL,Search site,Go up, pNg, Tag pages easily ,Navigate through sequential URL's,View page cached version,Surf anonymously using online phproxy servers, Twitter)
Collections are groups of related add-ons that anyone can create and share.Explore Collections